Sick as a dog.
More Traditional Proverbs:
The Spirit of GardeningTraditional
He's a fruit.
Traditional
Live not for time, but eternity.
Traditional
You can hardly make a friend in a year, but you can lose one in a hour.
Traditional
From the persistence of noise comes the insistence of rage. From the emergence of tone comes the divergence of thought. From the enlightenment of music comes the wisdom of ... silence.
Traditional
If you see the underside of the leaves in the gentle breeze, it will rain before your sneeze.
Traditional